Lambdoceras
Encyclopedia
Lambdoceras is an extinct genus
of Protoceratidae
belonging to the order Artiodactyla (subfamily Synthetoceratinae
) endemic to North America
during the Miocene
, living epoch 20.6—13.6 Ma, existing for approximately .
by Patton (1969), Patton and Taylor (1971) and Patton and Taylor (1973). It was assigned to Protoceratidae
by Stirton (1967), Tedford et al. (1987) and Albright (1999); and to Synthetoceratini
by Webb (1981), Prothero (1998), Webb et al. (2003) and Prothero and Ludtke (2007).
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of Protoceratidae
Protoceratidae
Protoceratidae is an extinct family of herbivorous North American artiodactyls that lived during the Eocene through Pliocene at around 46.2—4.9 Ma., existing for approximately .-Taxonomy:...
belonging to the order Artiodactyla (subfamily Synthetoceratinae
Synthetoceratinae
Synthetoceratinae is a subfamily of Protoceratidae herbivorous mammals belonging to the order Artiodactyla endemic to North America during the Miocene epoch, living 23.03—3.9 Ma, existing for approximately .-Taxonomy:...
) endemic to North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
during the Miocene
Miocene
The Miocene is a geological epoch of the Neogene Period and extends from about . The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words and and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene...
, living epoch 20.6—13.6 Ma, existing for approximately .
Taxonomy
Lambdoceras was named by Stirton (1967). Its type is Lambdoceras hessei. It was synonymized subjectively with ProsynthetocerasProsynthetoceras
Prosynthetoceras is an extinct genus of Artiodactyla, of the family Protoceratidae, endemic to North America from the early Miocene epoch 20.6—13.6 Ma, existing for approximately .-Taxonomy:...
by Patton (1969), Patton and Taylor (1971) and Patton and Taylor (1973). It was assigned to Protoceratidae
Protoceratidae
Protoceratidae is an extinct family of herbivorous North American artiodactyls that lived during the Eocene through Pliocene at around 46.2—4.9 Ma., existing for approximately .-Taxonomy:...
by Stirton (1967), Tedford et al. (1987) and Albright (1999); and to Synthetoceratini
Synthetoceratini
Synthetoceratini is an extinct tribe of the subfamily Synthetoceratinae within the family Protoceratidae belonging to the order Artiodactyla endemic to North America during the Miocene, living epoch 20.6—4.9 Ma, existing for approximately .-Taxonomy:...
by Webb (1981), Prothero (1998), Webb et al. (2003) and Prothero and Ludtke (2007).